Formation of epitaxial YBCO thin films by ex-situ processing of a polymerized complex

Author

Bubendorfer, Andrea J. ; Kemmitt, Tim ; Campbell, Lily J. ; Long, Nick J.

Author_Institution

Ind. Res. Ltd., Lower Hutt, New Zealand

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

2739

Lastpage

2742

Abstract

High T_c and J_c YBa₂Cu₃O_7-x (YBCO) thin films have been formed by ex-situ processing of a spin coated organic sol-gel precursor based on a polymerized complex. To form the precursor we have reacted metal cations with a chelating organic acid, then formed polyesterified complexes through reaction with a polyhydroxy alcohol. This method permits a simple, cheap and reliable route to the fabrication of YBCO films. The value of J_c achieved for the film deposited onto a LaAlO₃ [100] substrate at 77 K under a zero field is routinely as high as 0.25 MA/cm² with T_c,zero of 90.6 K.

Keywords

barium compounds; critical current density (superconductivity); high-temperature superconductors; sol-gel processing; spin coating; superconducting epitaxial layers; superconducting transition temperature; yttrium compounds; 77 K; LaAlO₃; LaAlO₃ [100] substrate; YBCO epitaxial thin film; YBa₂Cu₃O₇; critical current density; critical temperature; ex-situ processing; high temperature superconductor; organic acid chelate; polyesterification; polyhydroxy alcohol; polymerized complex; spin coated organic sol-gel precursor; Costs; Fabrication; Hafnium; High temperature superconductors; Polymer films; Solvents; Substrates; Superconducting films; Superconductivity; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.811983

Filename

1212187